Self-hoisting window



(No MoaeLj J; R. ARMSTRONG. ASELF HOISTINGYWINDOW. I No. 552,489. Patented Dec. 31, 1895..Y

UNITED STATES PATENT OFFICE.

JOHN RANIUN ARMSTRONG, OF NENVVARK, DELAVARE.

SlLF--HOISTINGY WINDOW.

SPECIFICATION forming part of Letters Patent No. 552,489, dated December 31, 1895. Application nea nach 19,1995. semina. 542,299. (No model.)

To all whom t may concern:

Be it known that I, JOHN RANKIN ARM- STRONG, a citizen of the United States, residing at Newark, in the county of New Castle and State of Delaware, have invented certain new and useful Improvements in Window- Saslies; and I do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same.

My invention relates to improvements in mechanism for automatically raising windowsashes, the same being especially adapted for use on car-windows, although the same may be applied to use on window-screens or doors.

The object of the invention is to provide means whereby car-windows may be raised without the usual strain upon the muscles of the back and arms, and locked at any point.

The invention consists of a window-sash having secured to it at points near the lower side thereof a flexible eXpansible cord which passes upwardly and around twopulleys secured in a suitable bracket at the upper part of the window-frame. The window-frame itself is provided with a dog similar to those usually employed for supporting the window, but located in a reverse position. The sash is grooved along its outer edges, forming a way for the flexible cord secured thereto, and has suitable spring-stops acting in connection with said dogs to lock the window at any point. In order to prevent rattling of the window-sash in the frame, I locate on one or both sides of the beads a soft-rubber antifrictional roller.

The invention is clearly illustrated in the accompanying drawings, in which- Figure 1 is a front elevation of the windowframe, showing` my improved sash therein. Fig. 2 represents a vertical central section through the window sash and frame, showing the location of the parts therein. Fig. 3 is a vertical central section through the springstop secured to the sash. Fig. 4. is a horizontal section through the sash. Fig. 5 is a detailed view of the friction-roller. Fig. 6 is a cross-section of the cord-clamp.

Like reference-numerals indicate like parts in the various views.

By reference to the drawings, it willbe seen that l represents a Window-frame of ordinary construction, having the parting-beads 2 2 therein. These beads are provided on one or both sides with a series of flexible rubber rollers 3, mounted in a suitable bracket 4, inserted in the beads 2, the roller proper projecting slightly beyond the edge thereof to form an antifrictional bearing for the window-sash and to prevent the rattling of the sash in the frame. 5 is a window-sash having its outer vertical edge grooved longitudinally,` as shown at 6, and havingv secured to it at points near its lower ends a flexible expansible cord 7. This cord is preferably secured l in a clamp 8, which is itself inserted in a recess in the edge of said window-sash and secured therein flush' with the edges by means of screws or bolts. The cord 7 passes upwardly from the window-sash around two pulleys 9 9, secured in suitable brackets between the upper beads of the window-frame l. Secured to the side of the sash 5, at a point near the lower end thereof, are spring stops or catches 10, which are adapted to engage the dogs l1 located along the edge of the windowframe. These spring-stops consist of a casing l2 recessed,as shown in Fig. 3, and having pivoted therein an arm 13, having teeth 14. at one end, which engage corresponding teeth upon a sliding stop l5, which is urged outwardly through the action of the coiled spring 16.

The original feature of my invention, it will be understood, is the sash having connected to it the flexible expansible cord 7, which tends to urge said sash normally upward. This cord can be connected to a window of ordinary construction in a very few moments, and when worn can be readily and quickly replaced.

In applying the same, the window is raised to its highest point, the cord passing through the pulleys 9 and the two ends thereof secured in the clamp 8. These clamps are now IOO ' use a series of these stops, for the purpose of securing the sash at any point. Vhen it is desired to raise the Window, it is inerelynecessary to press on the arm 13, when the teeth 14 are retracted against the force of the spring 15, and the sash 5 automatically raises itself. The provision of the rubberrollers et prevents all rattling of the sash in the frame.

It is of course obvious that 1 may use any kind of flexible expansible cord that may be found to answer iny purpose. I prefer, however, to use a stranded rubber cable covered with a protecting` fabric.

r1`he invention is extremely simple in construction, can be cheaplyniade, and is eitective in operation.

Having thus described the invention, what claimed as new is- The combination with a window frame, of

a sash moving therein having recesses along; its outer edges, a iiexible expansible cord pass ing around pulleys in the top of Asaid frame and connected at its 'ends'tothe sides of the sashby means of a clainp made up of a plate adapted to fit the edge of said sash and cover the recesses therein, a yoked clamp in which said cord and plate fit and screws for forcing the movable parts of said clamp together, substantially as and for the purpose described.

In testimony whereoil I have signed this speciiication in the presence of two subscribing `Witnesses.

JOHN RANKIN ARMSTRONG.

witnesses WM. 1\1. STOCKBRIDGE, Louis G. RANDALL. 

